Alert archive / Missouri / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 16, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 24, 1993, 10:23 PM CDT for Saint Louis County, Missouri. It was in force for 37 min.
The area
The counties it named.
The facts
- Issued
- Apr 24, 1993, 10:23 PM CDT (03:23 UTC)
- Expired
- Apr 24, 1993, 11:00 PM CDT
- In force
- 37 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Saint Louis County, MO
The radar
The St Louis radar (KLSX), 22 km from the middle of the area, began a volume at 03:22 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 00:00Z, 3.4 hours before the alert went out and 232 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 158 J/kg
- Mixed-layer CIN
- -304 J/kg
- Mixed-layer LCL
- 1187 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 268 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 250328 SVRSTL MOC189-250400- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 1023 PM CDT SAT APR 24 1993 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1100 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN EAST CENTRAL MISSOURI ...NORTHERN ST LOUIS COUNTY AT 1025 PM...A SEVERE THUNDERSTORM WAS 15 MILES WEST OF THE CITY OF ST. LOUIS...4 MILES NORTHEAST OF CHESTERFIELD. 1 INCH HAIL HAS BEEN REPORTED WITH THIS STORM. THE STORM WAS MOVING TO THE NORTHEAST AT 25 MILES AN HOUR AND WILL BE IN THE FLORISSANT BY 1045 PM. MORSE SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. &
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Apr 24, 8:40 PM CDT, 1 hour 43 minutes before
MOZ012-250230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 834 PM CDT SAT APR 24 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PARTS OF EAST CENTRAL MISSOURI UNTIL MIDNIGHT... AT 830 PM...SCATTERED THUNDERSTORMS HAD DEVELOPED 25 MILES WEST OF THE C YST. LOUIS...IN WESTERN ST. LOUIS COUNTY. THE STORMS WERE MOVING TO THE NORTHEAST AT 35 MILES AN HOUR AND WILL MOVE ACROSS BALLWIN...AND INTO THE FERGUSON AND FLORISSANT AREAS BETWEEN 9 AND 915 PM. THESE STORMS WILL PRODUCE VERY HEAVY RAIN...FREQUENT DANGEROUS LIGHTNING...AND SMALL HAIL AS THEY MOVE THROUGH ST. LOUIS COUNTY. FRANKLIN COUNTY OFFICALS REPORTED 1/2 INCH HAIL IN UNION AT 832PM. TAKE SHELTER INSIDE AND STAY AWAY FROM WINDOWS UNTIL THE STORMS PASS. MORSE/FERRY &
Special weather statement, Apr 24, 8:51 PM CDT, 1 hour 32 minutes before
MOZ006-009-010-011-013-014-250245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 850 PM CDT SAT APR 24 1993 ...SEVERE THUNDERSTORM WATCH FOR CENTRAL MISSOURI UNTIL MIDNIGHT... AT 845 PM VERY STRONG THUNDERSTORMS WERE IN CENTRAL MISSOURI IN A 5 MILE WIDE BAND FROM ABOUT SEDALIA TO ABOUT 25 MILES SOUTH OF SEDALIA NEAR WARSAW. OTHER VERY STRONG THUNDERSTORMS WERE 40 MILES EAST OF JEFFERSON CITY NEAR HERMANN...AND ABOUT 30 MILES NORTHEAST OF COLUMBIA NEAR MEXICO. THE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 35 MILES AN HOUR AND WILL LIKELY PRODUCE SMALL HAIL...NUMEROUS DEADLY CLOUD TO GROUND LIGHTNING STRIKES...ALONG WITH TORRENTIAL RAIN THAT COULD REDUCE VISIBILITIES TO NEAR ZERO WHILE DRIVING. IF SEVERE WEATHER IS SPOTTED GET TO A SAFE PLACE IMMEDIATELY. GO TO THE BASEMENT OR TO THE INTERIOR ROOM OF A HOUSE...AWAY FROM WINDOWS. WHEN IT IS SAFE RELAY ANY SEVERE WEATHER REPORTS TO THE NEAREST LAW ENFORCEMENT AGENCY SO IT CAN BE PASSED ALONG TO THE NATIONAL WEATHER SERVICE. STAY TUNED TO NATIONAL WEATHER SERVICE RADIO OR COMMERCIAL BROADCASTS FOR THE LATEST STATEMENTS OR WARNINGS ACROSS CENTRAL MISSOURI TONIGHT. LA GREE
Special weather statement, Apr 24, 9:20 PM CDT, 1 hour 3 minutes before
MOZ011-012-250315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 914 PM CDT SAT APR 24 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PARTS OF EAST CENTRAL MISSOURI UNTIL MIDNIGHT... AT 915 PM...A LINE OF STRONG THUNDERSTORMS EXTENDED FROM 20 MILES NORTH OF ST. LOUIS IN ST. CHARLES COUNTY TO 50 MILES WEST OF ST. LOUIS TO 55 M ESOUTHWEST OF ST. LOUIS IN SOUTHWEST FRANKLIN COUNTY. THE STORMS WERE MOVING TO THE NORTHEAST AT 35 MILES AN HOUR. THE STRONGEST STORM IN THIS LINE WAS IN SOUTHERN WARREN COUNTY NEAR HOLSTEIN...OR 45 MILES WEST OF ST. LOUIS. THE STORMS WILL PRODUCE TORRENTIAL RAINS...GUSTY WINDS AND DANGEROUS LIGHTNING IN FRANKLIN AND ST. CHARLES COUNTLY BETWEEN 930 AND 1030 PM. STAY INSIDE AND AWAY FROM WINDOWS AND DO NOT USE THE TELEPHONE OR ELECTRICAL APPLIANCES UNTIL THE STORMS PASS. MORSE/FERRY
Special weather statement, Apr 24, 9:50 PM CDT, 33 minutes before
MOZ006-009-010-011-013-014-250245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 945 PM CDT SAT APR 24 1993 ...SEVERE THUNDERSTORM WATCH FOR CENTRAL MISSOURI UNTIL MIDNIGHT... THUNDERSHOWERS..SOME WITH VERY HEAVY RAINS CONTINUED ACROSS CENTRAL MISSOURI AT 940 PM CDT. THE BROAD AREA OF GENERAL SHOWERS WAS SOUTH OF A LINE FROM KANSAS CITY TO HANNIBAL AND COVERED ALL OF CENTRAL MISSOURI. THE HEAVIEST SHOWERS WERE IN AN AREA ABOUT 40 MILES IN DIAMETER AND CENTERED OVER CALIFORNIA...ABOUT 20 MILES SOUTHWEST OF COLUMBIA. OTHER HEAVY SHOWERS WERE WIDELY SCATTERED FROM 40 MILES NORTHWEST OF COLUMBIA..AROUND SALISBURY..TO CENTRALIA AND MEXICO.. ABOUT 25 MILES NORTHEAST OF COLUMBIA. THE SHOWERS AND THUNDERSHOWERS WERE MOVING TO THE NORTHEAST AROUND 25 MILES AN HOUR. NO SEVERE WEATHER WAS REPORTED OR INDICATED BY RADAR IN CENTRAL MISSOURI THIS EVENING. LB
Special weather statement, Apr 24, 9:55 PM CDT, 28 minutes before
MOZALL-250430- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 955 PM CDT SAT APR 24 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PARTS OF SOUTHERN AND CENTRAL MISSOURI UNTIL MIDNIGHT... ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR A SMALL PART OF EAST CENTRAL MISSOURI UNTIL 100 AM CDT... ...A TORNADO WATCH IS ALSO IN EFFECT FOR PARTS OF SOUTHWEST AND SOUTH CENTRAL MISSOURI UNTIL 100 AM CDT... AT 945 PM...SHOWERS AND THUNDERSTORMS WERE SCATTERED OVER MUCH OF MISSOURI. THE STRONGEST STORMS EXTENDED FROM WEST OF ST LOUIS INTO CENTRAL MISSOURI...AND FROM THE SPRINGFIELD AREA SOUTHWEST INTO NORTHERN ARKANSAS. THESE STORMS WERE MOVING EAST TO NORTHEAST AT 35 MILES AN HOUR. IF YOU LIVE IN SOUTHWEST OR SOUTH CENTRAL MISSOURI...REMAIN ALERT FOR SEVERE THUNDERSTORMS AND POSSIBLE TORNADOES. CONDITIONS REMAIN FAVORABLE FOR THE DEVELOPMENT OF TORNADOES. LARGE HAIL...FREQUENT LIGHTNING AND VERY HEAVY RAIN ARE ALSO THREATS. IF STORMS MOVE INTO YOUR AREA...TAKE SHELTER AND LISTEN FOR POSSIBLE WARNINGS. FOR RESIDENTS OF CENTRAL AND EAST CENTRAL MISSOURI...SEVERE THUNDERSTORMS ARE STILL POSSIBLE THIS EVENING WHICH MAY PRODUCE LARGE HAIL AND DAMAGING WIND. IF A WARNING IS ISSUED FOR YOUR COUNTY OR AREA...STAY INDOORS AND LISTEN FOR LATER STATEMENTS. SEVERE THUDERSTORM WATCH #155 HAS BEEN DROPPED FOR THE IMMEDIATE KANSAS CITY AND SEDALIA AREA...BUT REMAINS IN EFFECT EAST AND SOUTH OF THERE. SHEAj
Special weather statement, Apr 24, 10:12 PM CDT, 11 minutes before
MOZ012-250400- SPECIAL WEATHER STATEMENT AND SHORT-RANGE FORECAST NATIONAL WEATHER SERVICE ST LOUIS MO 1008 PM CDT SAT APR 24 1993 ...STRONG THUNDERSTORMS CONTINUE WEST AND NORTH OF ST LOUIS... AT 1006 PM...AN AREA OF THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDED FROM ABOUT 15 MILES NORTH OF ST LOUIS DOWN INTO WESTERN ST LOUIS COUNTY. MOVEMENT OF THESE WAS NORTHEAST AT 35 MILES AN HOUR. CITIES AND COMMUNITIES WEST AND NORTH OF ST LOUIS CITY CAN EXPECT THUNDERSTORMS WITH VERY HEAVY RAIN...FREQUENT LIGHTNING AND SMALL HAIL THROUGH 1130 PM. IF YOU ARE DRIVING...VISIBILITIES MAY BE REDUCED TO A FEW YARDS IN AREAS OF HEAVY RAIN. WHEN A STORM MOVES INTO YOUR AREA...REMAIN INDOORS AND KEEP INFORMED OF THE LATEST WEATHER CONDITIONS IN CASE A WARNING IS ISSUED. LISTEN FOR NOAA WEATHER RADIO FOR WEATHER INFORMATION. SHEA
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 7:23 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln | 26 min |
| Apr 24, 9:22 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Saint Charles, Warren | 38 min |
| Apr 24, 10:37 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 53 min |
| Apr 25, 12:28 AM CDT | Severe Thunderstorm Warning | LSX | Crawford | 35 min |
| Apr 25, 12:38 AM CDT | Severe Thunderstorm Warning | LSX | Dent, Reynolds | 52 min |
| Apr 25, 12:41 AM CDT | Severe Thunderstorm Warning | LSX | Saint Francois, Washington | 49 min |
| Apr 25, 12:45 AM CDT | Severe Thunderstorm Warning | LSX | Washington | 45 min |
| Apr 25, 12:59 AM CDT | Severe Thunderstorm Warning | LSX | Sainte Genevieve | 46 min |
| Apr 25, 1:14 AM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 33 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 1993Every severe thunderstorm warning in 1993
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.